"Cowboy Ninja Viking" is based on the Image Comics graphic novel by AJ Lieberman and artist Riley Rossmo. The title character comes from a secret government program to turn schizophrenics into assassins. The protagonist comes through the program with the skill sets of a cowboy, ninja and a viking. While most of the patients involved in the program are sent back to insane asylum after the program went awry in Iraq, he escapes and uses his skills to track down the billionaire who masterminded the program.